<template>
  <div style="height: 6vh;background-color:#fff;padding: 10px 20px;">
    <span style="line-height:60px;font-size:20px;">用户管理</span>
    <el-button type="primary" style="float: right;margin-top: 10px;"
               @click="beforeAddUser">新建用户</el-button>
  </div>
  <!-- 新建用户弹窗 -->
  <!-- :before-close="handleClose" 在弹窗关闭前先调用handleClose方法来处理弹窗的关闭问题
   避免点击弹窗外部也能关闭弹窗-->
  <el-dialog
      :title="dialogTitle"
      style="width: 1000px;padding: 40px;"
      v-model="dialogVisible"
      :before-close="handleClose"
  >
    <el-form label-position="top" label-width="80px">
      <el-row :gutter="10">
        <el-col :span="12">
          <el-form-item label="用户名">
            <el-input placeholder="请输入用户名" v-model="saveUserForm.username"
                      :disabled="saveUserForm.id != null"></el-input>
          </el-form-item>
        </el-col>
        <el-col :span="12">
          <el-form-item label="手机号">
            <el-input placeholder="请输入手机号" v-model="saveUserForm.phone"></el-input>
          </el-form-item>
        </el-col>
      </el-row>
      <el-row :gutter="10">
        <el-col :span="12">
          <el-form-item label="邮箱">
            <el-input placeholder="请输入邮箱" v-model="saveUserForm.email"></el-input>
          </el-form-item>
        </el-col>
        <el-col :span="12">
          <el-form-item label="年龄">
            <el-input placeholder="请输入年龄" v-model="saveUserForm.age"></el-input>
          </el-form-item>
        </el-col>
      </el-row>
      <el-row :gutter="10">
        <el-col :span="6">
          <el-form-item label="职级">
            <el-select placeholder="请选择" v-model="saveUserForm.level" @change="loadLeader">
              <el-option v-for="item in levelOptions"
                         :label="item.label" :value="item.value"></el-option>
              <!--              <el-option label="职员" value="10"></el-option>-->
              <!--              <el-option label="经理" value="20"></el-option>-->
              <!--              <el-option label="总监" value="30"></el-option>-->
              <!--              <el-option label="总裁" value="40"></el-option>-->
            </el-select>
          </el-form-item>
        </el-col>
        <el-col :span="6">
          <el-form-item label="直属领导">
            <el-select placeholder="请选择" v-model="saveUserForm.parentId">
              <el-option v-for="item in leaderOptions"
                         :label="item.username" :value="item.id"></el-option>
            </el-select>
          </el-form-item>
        </el-col>
        <el-col :span="4">
          <el-form-item label="性别">
            <el-radio-group v-model="saveUserForm.gender">
              <el-radio border label="男" value="1" style="margin:0;"></el-radio>
              <el-radio border label="女" value="0"></el-radio>
            </el-radio-group>
          </el-form-item>
        </el-col>
        <el-col :span="6">
          <el-form-item label="用户状态">
            <el-radio-group v-model="saveUserForm.status">
              <el-radio border label="启用" value="1" style="margin:0;"></el-radio>
              <el-radio border label="禁用" value="0"></el-radio>
            </el-radio-group>
          </el-form-item>
        </el-col>
      </el-row>
    </el-form>
    <template #footer>
      <el-button @click="handleClose">取消</el-button>
      <el-button type="primary" @click="saveUser">保存</el-button>
    </template>
  </el-dialog>

  <!-- 用户搜索卡片 -->
  <el-card style="margin: 20px;height: 70px;">
    <el-form :inline="true">
      <el-form-item label="用户搜索" style="width: 220px;">
        <el-input placeholder="输入用户名" v-model="searchUserForm.username" @keydown.enter="loadUser"></el-input>
      </el-form-item>
      <el-form-item label="用户状态" style="width: 220px;">
        <el-select placeholder="请选择用户状态" v-model="searchUserForm.status" @change="loadUser">
          <el-option label="启用" value="1"></el-option>
          <el-option label="禁用" value="0"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button @click="resetSearch">重置</el-button>
        <el-button type="primary" @click="loadUser">查询</el-button>
      </el-form-item>
    </el-form>
  </el-card>

  <!-- 用户表格卡片 -->
  <el-card style="margin: 20px;">
    <el-table :data="userArr">
      <el-table-column type="index" label="编号" width="80" align="center"></el-table-column>
      <el-table-column prop="username" label="用户名" align="center"></el-table-column>
      <el-table-column prop="phone" label="手机号" align="center"></el-table-column>
      <el-table-column prop="createTime" label="加入时间" align="center"></el-table-column>
      <el-table-column prop="status" label="用户状态" align="center">
        <template #default="scope">
          <!--  scope.row就代表表格中当前行的用户对象,也就是后端返回的userVO -->
          <el-switch active-value="1" inactive-value="0"
                     v-model="scope.row.status"
                     @change="changeStatus(scope.row.id,scope.row.status)"
          ></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center">
        <template #default="scope">
          <el-button link type="primary" :disabled="scope.row.level==40"
                     @click="resetPassword(scope.row.id)">密码重置</el-button>
          <el-button link type="primary" :disabled="scope.row.level==40"
                     @click="editUser(scope.row.id)">编辑</el-button>
          <el-button link type="primary" :disabled="scope.row.level==40"
                     @click="deleteUser(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
  </el-card>
</template>

<script setup>
import {onMounted, ref} from "vue";
import axios from "axios";
import qs from "qs";
import {ElMessage} from "element-plus";

//定义变量控制弹窗是否出现
const dialogVisible = ref(false);
//定义变量用来控制弹窗的标题
const dialogTitle = ref('新建用户');

//定义数组用来维护员工职级的选项
const levelOptions = ref([
  {label:'员工',value:'10'},
  {label:'经理',value:'20'},
  {label:'总监',value:'30'},
  {label:'总裁',value:'40'},
]);
//定义数组用来维护员工直属领导的选项
const leaderOptions = ref([
  // {username:'AA',id:101},
  // {username:'BB',id:102}
]);
//定义对象用来收集保存表单的所有员工数据
const saveUserForm = ref({
  username:'',
  phone:'',
  email:'',
  age:'',
  level:'',
  parentId:'',
  gender:'',
  status:'',
});
/* 点击"新建用户"按钮,出弹窗+修改弹窗标题 */
const beforeAddUser = ()=>{
  dialogVisible.value = true;
  dialogTitle.value = '新建用户';
}
//定义保存用户的方法
const saveUser = ()=>{
  console.log(saveUserForm.value);
  /* 安装查询字符串框架qs  npm install qs
  使用qs框架将JS对象转为查询字符串格式 name=tom&age=18,注意qs需要导入!!! import qs from "qs"; */
  let data = qs.stringify(saveUserForm.value);
  console.log(data);
  //向后端发送保存员工的请求
  /* 此处传的参数是qs转换后的查询字符串data,注意:使用了查询字符串,后端Controller不用加@RequestBody注解!!! */
  axios.post(BASE_URL+'/v1/user/save',data)
      .then((response)=>{
        if(response.data.code == 2000){
          ElMessage.success('保存成功!');
          //关闭弹窗,并清空双向绑定的表单数据
          dialogVisible.value = false;
          saveUserForm.value = {};
          //保存成功后要重新加载用户数据!
          loadUser();
        }else{
          ElMessage.error(response.data.msg);
        }
      })
}
//处理弹窗关闭的方法
const handleClose = ()=>{
  if(confirm('您确认要关闭本窗口吗?')){
    //关闭弹窗,并清空双向绑定的表单数据
    dialogVisible.value = false;
    saveUserForm.value = {};
  }
}

//定义对象用来保存用户的查询条件
const searchUserForm = ref({username:'', status:''});
//定义对象保存查询到的用户表格数据
const userArr = ref([]);
//定义加载用户的方法
const loadUser = ()=>{
  let data = qs.stringify(searchUserForm.value);//username=tom&status=1
  //如果有查询条件,就根据后面拼接的条件查,没有条件默认加载所有用户数据
  axios.get(BASE_URL+'/v1/user/select?'+data)
      .then((response)=>{//回调函数中处理响应结果
        if(response.data.code == 2000){
          userArr.value = response.data.data;//将后端响应数据装入用户数组中
          console.log(userArr.value);
        }else{
          ElMessage.error(response.data.msg);
        }
      })
}
//定义重置搜索条件的方法
const resetSearch = ()=>{
  //清空之前的搜索条件
  searchUserForm.value = {};
  //重新加载所有的用户数据
  loadUser();
}

/* 页面一加载完毕,立即执行 */
onMounted(()=>{
  loadUser();
})

//定义一个加载直属领导数据的方法
const loadLeader = ()=>{
  //优化:如果已经选择了直属领导数据,需要再次重新选择职级的话
  //就需要将之前已加载的领导数据和已选择的直属领导数据清空!
  leaderOptions.value = [];
  saveUserForm.value.parentId = '';
  //拿到当前选择的员工职级,当前员工的职级+10才是所有可选直属领导的职级
  let level = parseInt(saveUserForm.value.level)+10;
  console.log(level);
  axios.get(BASE_URL+'/v1/user/select?level='+level)
      .then((response)=>{
        if(response.data.code == 2000){
          console.log(response.data.data);
          leaderOptions.value = response.data.data;
        }else{
          ElMessage.error(response.data.msg);
        }
      })
}
//定义重置密码的方法 restful风格
const resetPassword = (userId)=>{
  axios.post(BASE_URL+'/v1/user/update/password/'+userId)
      .then((response)=>{
        if(response.data.code == 2000){
          ElMessage.success('密码重置成功!');
        }else{
          ElMessage.error(response.data.msg);
        }
      })
}

//定义编辑用户的方法
const editUser = (id)=>{
  //出弹窗 + 修改弹窗标题
  dialogVisible.value = true;
  dialogTitle.value = '编辑用户';
  //根据用户id查询当前用户的详细数据显示在弹窗表单中
  axios.get(BASE_URL+'/v1/user/select?id='+id).then((response)=>{
    if(response.data.code == 2000){
      //注意:后端返回的是List<UserVO>,所以查一条数据的话拿的是集合的第1个元素,data[0]等价list.get(0)
      saveUserForm.value = response.data.data[0];
      //拿到当前选择的员工职级,当前员工的职级+10才是所有可选直属领导的职级
      let level = parseInt(saveUserForm.value.level)+10;
      axios.get(BASE_URL+'/v1/user/select?level='+level)
          .then((response)=>{
            if(response.data.code == 2000){
              console.log(response.data.data);
              leaderOptions.value = response.data.data;
            }else{
              ElMessage.error(response.data.msg);
            }
          })
    }else{
      ElMessage.error(response.data.msg);
    }
  })
}

//定义修改员工状态的方法
const changeStatus = (userId,status)=>{
  axios.post(BASE_URL+'/v1/user/update/status/'+userId+'/'+status)
      .then((response)=>{
        if(response.data.code == 2000){
          ElMessage.success('修改状态成功!');
        }else{
          ElMessage.error(response.data.msg);
        }
      })
}

//创建删除员工的方法
const deleteUser = (userId)=>{
  if(confirm('您确认要删除该员工吗?')){
    axios.post(BASE_URL+'/v1/user/delete/'+userId)
        .then((response)=>{
          if(response.data.code == 2000){
            ElMessage.success('删除成功!');
            loadUser();//重新加载用户数据
          }else{
            ElMessage.error(response.data.msg);
          }
        })
  }
}
</script>

<style scoped>

</style>